Reinhold ii



No. 609,639. Patented Aug. 23, I898. R. H. WAPPLER.

ELECTROIEDICAL APPARATUS.

(Application am Now. 2, 1897.)

(No Model.)

UNITED STATES PATENT OFFICE.

REINHOLD II. WAPPLER, OF NEIV YORK, N. Y.

ELECTROMEDICAL APPARATUS.

SPECIFICATION forming part of Letters Patent No. 609,639, dated August 23, 1898.

Application filed November 2, 1897. Serial No, 657,163. (No model.)

To all whom it may concern:

Be it known that I, REINHOLD H. W'APPLER, a citizen of the United States, residing at the city of New York, in the county and State of New York, have invented an Improvement in Electromedical Apparatus, of which the following is a specification.

In electromedical apparatus provision has usually to be made for bringing into action continuous currents, induced or faradic currents, pulsatory currents, and currents for cauterizing and other surgical operations. Apparatus of this character has been rendered complicated in consequence of the various switches required for turning the currents upon the particular portions of the apparatus or for cutting oh? the same, and this involved considerable skill on the part of the operator. IIence his attention was absorbed by the apparatus instead of being devoted to the patient.

In my present invention I have modified the apparatus represented in Letters Patent No. 581,091, granted to me April 20, 1897, to adapt the same to different uses in the electromedical apparatus, so that the strength of the current can be varied at will and indicated 011 a dial and also that the current can be turned off or on at will whereby to dispense with switches, and I also arrange the apparatus for bringing into action a motor, or for arresting the movement of the motor, or regulating the intensity of the current in the circuit, or for turning OK or on such current, or for rotating the motor in one direction or the other.

In the drawings, Figure 1 is an elevation of my improved apparatus viewed cornerwise and a diagram illustrating the circuit connections. Fig. 2 is a plan sectionally at the line 2 2; and Fig. 3 is a diagram illustrative of the present improvement, especially when used with an apparatus corresponding generally to that shown in Fig. 2 in my aforesaid patent, No. 581,091.

The rheostat-coil A is of suitable wire of inferior conductivity or high resistance, preferably wound upon a metallic tube and insulated therefrom, and this tube is advantageously open at both ends and passed through the heads 13 O, of non-conducting material,

and at one end of the rheostat-coil A is a cylinder A, of insulating material.

D is a slide-bar supported at its ends upon the heads ]3 C, and upon this bar is a slider E, having a spring-contact 4:, that bears upon the wires of the rheostat-coil, so as to close the electric circuit through the coil, the spring 4, the slider E, and the bar D; but when the spring at is moved so as to rest upon the insulating material A the electric circuit is broken, and in this position the rheostatslider efiects the same object as a separate switch. This slider E receives its motion from a connecting-rod K to a crank-arm L upon a shaft 0, supported in suitable bearings 5 and provided with a hand 6 in front'of a dial I, and it is advantageous to provide a button at the end of the shaft 0, by which the shaft and hand can be turned so as to bring the hand to any desired marks upon the dial, and when this shaft and hand are turned to zero the slider E is moved so that the spring 4 rests upon the insulating material A.

The bars F and G are connected at their ends to the insulating-heads B and C, and upon the slider E is a block or plate of insulating material 9, which carries the springcontact 8 that extends across from the bar F to the bar G, so as to close the electric circuit between these bars, except at the extreme end of the movement, at which time the spring-contact 8 passes oil": the bars F and G upon the insulating-block 11, breaking the circuit between F and G.

Let H represent a dynamo or other source of electric energy and I an electric lamp or other resistance in the circuit, and 13 and 14 are the wires of the working circuit, into which the cauterizer or otherinstrument may be introduced, or from which the current may taken to the patient or otherwise availed of in the electromedical apparatus, and the wire 13 is connected to the bar D, the wire 15 from the source of electric energyis connected to the bar G, the wire 16 from the other pole of the generator is connected to one end of the rheostat-coil A and the other end of the rheostat-coil A is connected with the bar F, and the wire 14 also is connected to one end of the rheostat-coii A.

It will now be apparent that according to the position of the slider E and spring 4, so more or less resistance will be thrown into the derived circuit passing through A, 4, E, D, and 13, and according to the position of the contact 8 upon the bars F and G, so more or less resistance will be introduced into the generator-circuit passing from H by 15, G, 8, F, and A, returning by 16 and I to H, and by moving the slider E toward A and 11, the resistance in the circuit will be increased, so as to lessen the current, and then the circuit will be finally broken, when the spring 4 passes upon A and the contact 8 passes on the insulating-block 11.

Referring now to the circuits shown in Fig. 3 and to the additional slider, it will be observed that upon the shaft 0 a second crankarm L is made use of and a connecting-rod K to the slider E, and the relative positions and action of the contacts 4 of the slider E and 24 of the slider E correspond generally to those set forth in my aforesaid patent, No. 581,091, the sliders being moved in opposite directions in consequence of the cranks being at opposite sides of the shaft, and hence when 4 and 24 are near each other at opposite sides of the rheostat A the greatest resistance is in the circuit, and the reverse. In the bars F and G, at the middle portions thereof, insulating materials are introduced at 20 or 21, or both; but the continuity of the bars is maintained beneath the insulating materials. Hence when the contacts 4 and 24 are close together at opposite sides of the rheostat A the contact 8 is upon the iusula tion at 20 21 and the main circuit at this pointis broken and no current can be diverted through the shunt or loop 24, E, 33, N, 34, D, E," and 4. Let N represent the armature of a motor and N the field of the motor. Following the circuit connections from the generator or other source of electric energy H the current passes from H by 16 and A, and from A by 30 to F and by 8, G, and 31 to the armature N, and by 32 to H, and the field N is in the circuit between D and D, the wires 33 and 34 being connected from the field to the respective bars D and D. The dial P is illustrated in Fig. 3, and the hand 6 when turned to zero moves the contact 8 upon the insulations 20 and 21. Hence the main linecircuit H 16 A 30 F 8 G 31 N 32 is broken at 20 and 21, and the current will be turned on by moving the hand either one way or the other from zero, and according to the resistancethat is, the circuit passing the field Nso the motor will be energized, because it will be noticed that when the contact 8 is moved near one end of the bars F and G the slider E is moved to near the other end of the rheostat A. Hence the entire resistance of the rheostat will be thrown into the circuit passing from 16 through A to 24, but the current will pass from 16 by 4, E, D, 34, N, 33, D, 24, A, 30, F, 8, G, 31, N, and 32 to H; but if the sliders E E are moved toward the other ends of the rheostat A the current will pass from 16 by 24, E, D, 33, N, 34, D, 4, A, 30, F, 8, G, 31, N, and 32 to H, thus causing the current to pass through the field-helices in the opposite direction for reversing the movement of the motor, and the speed of movement will be regulated according to the position of the respective parts upon the resistance-coil, and this is indicated by the numbers on the dial P, and the direction of rotation should also be indicated upon the said dial-for instance, Right, Left, or where the motor is employed for turning on or off the current other marks can be put upon the dial, such as Turn on, Turn off.

The manner in which this presentimprovement will be introduced in the electromedical apparatus and the connections made to the various appliances therein associated will be readily understood by a party skilled in the art, and the details need not be further elaborated.

Insulating material may be inserted in the rods K K in any usual of desired manner to prevent the current being short-circuited.

I claim as my invention 1. The combination with the rheostat-coil, the slider and contact and a crank and connecting-rod for moving the slider, of a dial and hand by which to indicate the action of the rheostat in the electric circuit, there being insulating material upon which the sliding contacts rest when the current is turned off, substantially as set forth.

2. The combination with the rheostat-coil and a slider, of a bar for supporting such slider, an insulated contact carried by and moving with the slider and a bar over which the contact is moved by the slider, such bar having an insulating-surface for acting with the contact to break the circuit, substantially as set forth.

3. The combination with the rheostat-coil, of two sliders, a shaft, cranks and connections for moving the sliders in opposite directions, a hand upon the crank-shaft and a dial for indicating the action of the rheostat in the electric circuit, substantially as set forth.

4. The combination with the rheostat-coil, of two sliders and cranks and connections for giving motion to the sliders in opposite directions, an insulated contact carried by one cf the sliders and a bar included in the electric circuit and having an insulated surface near the center of the bar for breaking the circuit at the time the sliders in contact with the rheostat are near each other, substan tially as set forth.

5. The combination with a rheostatcoil and a source of electric energy, of two sliders, means for moving them in opposite directions, a motor with a fieldin a derived or shunt circuit from the rheostat, and the armature of the motor in the main circuit, an insulated contact connected with and moved by one of the sliders, bars with which the contact engages, such bars being in the main circuit and having insulated surfaces near their middle portions for interrupting the current substantially as specified, so that the current can be turned on or off, or the motor rotated in either one direction or the other, and the speed thereof regulated according to the resistance thrown into the circuit by the rheostat-coil, substantially as set forth. [0

Signed by me this 1st day of November, 1897.

REINI-IOLD II. WAPPLER. Witnesses:

F. H. WAPPLER, CH. FAYER. 

